using a dedicated folder for documentation in each subproject

git-svn-id: https://vsmartcard.svn.sourceforge.net/svnroot/vsmartcard@587 96b47cad-a561-4643-ad3b-153ac7d7599c

npa/Makefile.am

@@ -1,7 +1,7 @@
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = src m4
+SUBDIRS = src m4 doc
 
-EXTRA_DIST = README.dox libnpa.pc.in Doxyfile.in apdus
+EXTRA_DIST = libnpa.pc.in apdus
 
 do_subst = sed \
 	   -e 's,[@]PACKAGE_NAME[@],$(PACKAGE_NAME),g' \
@@ -24,8 +24,7 @@ win:
 if DOC_ENABLED
 .PHONY: doc
 doc :
-	$(do_subst) < $(srcdir)/Doxyfile.in > Doxyfile
-	$(DOXYGEN) Doxyfile
+	$(MAKE) doc -C doc
 endif
 
 pkgconfigdir = $(libdir)/pkgconfig
@@ -34,4 +33,4 @@ libnpa.pc:
 	$(do_subst) < $(srcdir)/libnpa.pc.in > libnpa.pc
 
 clean-local:
-	rm -rf doc Doxyfile libnpa.pc
+	rm -f libnpa.pc